EasyPDFLoad

Test run October 22, 2026

Compress a PDF to an exact size

Short answer: Pick the size your form demands and the compressor re-encodes every page until the file fits under it. It works well on scans and photo PDFs and badly on text PDFs. In our test it fit 37 of 43 runs, and it never claimed a hit it missed.

Why a target size instead of low, medium and high

People arrive here because a portal rejected their file and printed a number at them. Low, medium and high turn that into guesswork and a second attempt. Name the number and the tool searches for the highest image quality that still fits, then reports the real size it reached.

It is a no-larger-than tool, not an exact-size tool. Where quality would be pushed above its ceiling, the tool stops and returns a smaller file than your target, which is fine for any upload limit.

What actually makes a PDF big

Almost always images. Text is small: a hundred pages of it can be under a megabyte. A single page scanned at high resolution can be several megabytes by itself.

That is why a scan compresses a lot and a text report barely moves. This mode also has a cost you should know about: it turns every page into an image, so the text is no longer selectable, and a PDF that is mostly text would come out larger than it went in, so the tool does not download that result and keeps your original. If you need to keep selectable text, use the keep text selectable mode of Compress PDF, which only recompresses the images inside the file.

Pick your target

  • 100 KB: the strictest limit in common use, usually a single scanned page on a government, exam or job form.
  • 200 KB: university and scholarship forms and many job boards.
  • 500 KB: a common cap on web forms and older systems.
  • 1 MB: web forms, content management systems and visa portals.
  • 2 MB: learning platforms and forms that allow a little more room.
  • 5 MB: email and general uploads, with headroom for encoding.
  • 10 MB: large scans that must stay clearly readable.

For any other limit, set a custom size on the main Compress PDF tool.

How reliably does it reach each size?

We ran the real compressor in headless Chrome on ten PDFs we generated: phone-style photo scans, a grey scan, a colour photo document, a 20-page 29 MB scan, text-only and text-heavy files. For each target we measured the bytes of the file the tool produced, not the message on screen. A run counts as a hit when the output is at or under the target. Targets at or above the input size were not run.

Our own test, one run per file and target, 2026-10-22. The files are synthetic, so real scans may behave differently.
TargetRunsHitsMisses
100 KB954: a 20-page scan (185 KB), a 15-page mixed file (191 KB), a 50-page report (662 KB), a 100-page text contract (1.4 MB)
200 KB862: the 20-page scan (203 KB, 1.5% over) and the 100-page text contract (1.4 MB)
500 KB77None
1 MB77None
2 MB77None
5 MB33None
10 MB22None

The on-screen message agreed with the real output in all 43 runs. Typical time was a few seconds, and the slowest run, a 29 MB scan, took about 34 seconds.

Limits of this test: the PDFs were generated with noisy images and drawn text, not real camera or scanner output, each cell is a single run, and we checked readability only at screen size. Treat it as a guide to what kind of file works, not as a promise for yours.

Nothing is uploaded to reach that size

The re-encoding happens in your browser tab, and the file is never sent to a server. That matters here more than on most tools, because the documents people shrink for portals are often identity documents. How that works, and how to check it.

Straight answers (Compress a PDF to an exact size)

How do I compress a PDF to a specific size?

Open the size page for your limit, drop the PDF and click Compress to Target Size. The tool searches for the highest quality that fits and shows the size it reached. Everything runs in your browser.

Why did my PDF get bigger when I compressed it?

Because this mode turns every page into an image. A PDF that is mostly text is already small, and images of its pages can be larger. Keep the original, or use the keep text selectable mode.

Can every PDF be compressed to 100KB?

No. In our test, image-based files of one to five pages usually fit 100 KB, while long scans and text-heavy files did not. The tool reports the smallest size it reached.

Is it safe to compress a PDF with my ID on it?

The file is never uploaded, so no server holds a copy. You can confirm that in the Network tab of your browser developer tools. The tool does not protect the file once you send it on.

Does compressing remove the text?

In target size mode, yes: each page becomes an image and the words become pixels. Keep the original if you need to search or copy text later.

Is there a limit on the file size I can compress?

Not one the tool sets. The limit is your device's memory. A very large scan can be slow or fail on an older phone, and the tool shows an error instead of uploading anything.

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